I purchased a 94 F150 4x4 a 351w runs great but once in a while at a light idles real rough but not all the time. I read somewhere to reset the computer module by disconnecting the battery terminals n jump the pos n neg together and turn on headlights n drain out any residual voltage this would help reset the computer module. But what do I know? Also I have manual hubs with everything rebuilt to it front n back. Can I leave hubs locked when I get into better road conditions and switch over to 2 wheel drive or should I get out n unlock hubs? I will be going 35-40 mph. Then jump back into 4x4 mode when road conditions worsen like parking lots and unplowed side streets. I'm putting on Falken wildpeak mt 01 31x10.50r15 on her since the reviews look pretty good for use in North Idaho snow conditions.